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30102500000 = 255712041
BaseRepresentation
bin11100000010001111…
…111011001010100000
32212200220011102221102
4130002033323022200
5443122220000000
621455013013532
72113653012446
oct340217731240
985626142842
1030102500000
1111848092881
125a013242a8
132ab96a27a1
141657ccab96
15bb2b243d5
hex7023fb2a0

30102500000 has 96 divisors (see below), whose sum is σ = 74086333776. Its totient is φ = 12040000000.

The previous prime is 30102499979. The next prime is 30102500017. The reversal of 30102500000 is 520103.

It can be written as a sum of positive squares in 8 ways, for example, as 26429655184 + 3672844816 = 162572^2 + 60604^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2493980 + ... + 2506020.

Almost surely, 230102500000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30102500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37043166888).

30102500000 is an abundant number, since it is smaller than the sum of its proper divisors (43983833776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30102500000 is an frugal number, since it uses more digits than its factorization.

30102500000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12086 (or 12048 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 11.

The spelling of 30102500000 in words is "thirty billion, one hundred two million, five hundred thousand".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 80 100 125 160 200 250 400 500 625 800 1000 1250 2000 2500 3125 4000 5000 6250 10000 12041 12500 15625 20000 24082 25000 31250 48164 50000 60205 62500 78125 96328 100000 120410 125000 156250 192656 240820 250000 301025 312500 385312 481640 500000 602050 625000 963280 1204100 1250000 1505125 1926560 2408200 2500000 3010250 4816400 6020500 7525625 9632800 12041000 15051250 24082000 30102500 37628125 48164000 60205000 75256250 120410000 150512500 188140625 240820000 301025000 376281250 602050000 752562500 940703125 1204100000 1505125000 1881406250 3010250000 3762812500 6020500000 7525625000 15051250000 30102500000